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VizieR

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J/A+A/544/A31/ptolema Star catalogues of Ptolemaios, Ulugh Beg (Verbunt+, 2012)
Star Catalogue of Ptolemaios (137) (1028 rows)
  P=784
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ColumnValue  Explain   (UCD)
_RAJ200003:45:09.6 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J-128. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000-08:42:46 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J-128. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195003:42:44.8 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J-128. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950-08:52:12 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J-128. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon197.1155 deg Galactic longitude at Epoch=J-128. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat-45.0670 deg Galactic latitude at Epoch=J-128. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
784recno 784  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

P 784   [1/1028] Sequence number in Ptolemaios Catalogue (meta.id;meta.main)
C36   [1/48] Constellation sequence number (meta.id)
cst=Eri  Abbreviation of constellation name (meta.id)
N13   [1/45] Sequence number of star in constellation (meta.id)
f_N    [a] 'a' for star outside the constellation figure (meta.code)
Elon022:00.0 "d:m:s" Ecliptic longitude (Note 1)   (pos.ecliptic.lon)
Elat-28:00 "d:m:s" [0/90] Ecliptic latitude (Note 2)   (pos.ecliptic.lat)
VP3   [1/9] Magnitude as given by Ptolemaios (Note 3)   (phot.mag;em.opt)
q_VP    [bf] brighter/fainter qualifier by Ptolemaios (Note G1)   (meta.code.qual)
HIP 16537   Hipparcos number of identification (meta.number)
I1   [1/6] Quality of identification flag (Note G2)   (meta.code)
T1   [0/3] Comparison flag with Toomer (Note 4)   (meta.code.error)
Vmag 3.7 mag Johnson V magnitude (from Hipparcos) (phot.mag;em.opt.V)
Dl -13.0 arcmin Difference in longitude (Hipparcos-Ptolemaios) (pos;arith.diff)
Db -5.5 arcmin Difference in latitude (Hipparcos-Ptolemaios) (pos;arith.diff)
dist 12.7 arcmin Distance Δ between Ptolemaios and Hipparcos positions (pos;arith.diff)
Flag    [*] Flag for annotation in article (meta.code.error)

SimbadSimbad  ask the Simbad data-base about this object (meta.ref.url)
_RA.icrs03 45 10 "h:m:s" (i) Right ascension (ICRS) at Epoch=J-128. (computed by VizieR, not part of the original data) (pos.eq.ra)
_DE.icrs-09 "d:m:s" (i) Declination (ICRS) at Epoch=J-128. (computed by VizieR, not part of the original data) (pos.eq.dec)
  
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